package org.wanho.filter;

import org.wanho.entity.User;

import javax.servlet.*;
import javax.servlet.annotation.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebFilter(filterName = "MyFilter", urlPatterns = {"/detail.html","/result.html","/index.html","/insertProduct.html", "/insertBanner.html"})
public class MyFilter implements Filter {
    public void init(FilterConfig config) throws ServletException {
    }

    public void destroy() {
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws ServletException, IOException {
        HttpServletRequest ht = (HttpServletRequest) request;
        HttpServletResponse hs = (HttpServletResponse) response;
        User user = (User) ht.getSession().getAttribute("user");
        if (user == null) {
            hs.sendRedirect("/login.html");
        } else {
            chain.doFilter(request, response);
        }
    }
}
